Bump Dockerfile JRE from 21.0.6 to 21.0.8 (#1228)

Author: bguijt

api/Dockerfile

@@ -1,7 +1,7 @@
 # The tag is ignored when a sha is included but the reason to add it are:
 # 1. Self Documentation: It is difficult to find out what the expected tag is given a sha alone
 # 2. Helps dependabot during discovery of upgrades
-FROM azul/zulu-openjdk-alpine:21.0.6-jre-headless@sha256:75c5cc1ca1429513b56e9cbe3121bce86476cdec18b5b74b6842ab0af4b5a57f
+FROM azul/zulu-openjdk-alpine:21.0.8-jre-headless@sha256:9c7b4b7850bd4cdd78f91b369accc5b55beffa9a073b9a2bb94caa42606b9444
 
 RUN apk add --no-cache \
     # snappy codec